# ls /usr/local/include/c++/4.0.0
algorithm               csignal                 fstream                 ostream
arm-apple-darwin        cstdarg                 functional              queue
backward                cstddef                 iomanip                 set
bits                    cstdio                  ios                     sstream
bitset                  cstdlib                 iosfwd                  stack
cassert                 cstring                 iostream                stdexcept
cctype                  ctime                   istream                 streambuf
cerrno                  cwchar                  iterator                string
cfloat                  cwctype                 limits                  tr1
ciso646                 cxxabi.h                list                    typeinfo
climits                 debug                   locale                  utility
clocale                 deque                   map                     valarray
cmath                   exception               memory                  vector
complex                 exception_defines.h     new
csetjmp                 ext                     numeric